SystemHealth: Added message for SystemConfiguration Error
SystemHealth: Fix small logic error

This causes the full list of alarms to briefly flash when a
specific alarm is clicked.
SystemAlarm: Add image for the path planner

Also the messages that correspond with the error conditions.
SIM OSX: Include PathPlanner optionally
System Alarms: Rename Guidance to PathFollower

This is consistent with PathPlanner naming.  This requires
a clean rebuild of GCS (or at least more than the dependencies
catch).
Merge pull request #343 from peabody124/alarm_message

Alarm message